Datasheet

LTC2854/LTC2855
9
285455fc
For more information www.linear.com/LTC2854
BLOCK DIAGRAMS
LTC2854
LOGIC INPUTS
DE RE TE MODE A, B RO TERMINATOR
0 0 0 RECEIVE R
IN
DRIVEN OFF
0 0 1 RECEIVE WITH TERM R
TERM
DRIVEN ON
0 1 0 SHUTDOWN R
IN
HIGH-Z OFF
0 1 1 TERM ONLY R
TERM
HIGH-Z ON
1 0 0 TRANSMIT WITH RECEIVE DRIVEN DRIVEN OFF
1 0 1 TRANSMIT WITH RECEIVE
AND TERM
DRIVEN DRIVEN ON
1 1 0 TRANSMIT DRIVEN HIGH-Z OFF
1 1 1 TRANSMIT WITH TERM DRIVEN HIGH-Z ON
LTC2855
LOGIC INPUTS
DE RE TE MODE A, B Y, Z RO TERMINATOR
0 0 0 RECEIVE R
IN
HIGH-Z DRIVEN OFF
0 0 1 RECEIVE WITH TERM R
TERM
HIGH-Z DRIVEN ON
0 1 0 SHUTDOWN R
IN
HIGH-Z HIGH-Z OFF
0 1 1 TERM ONLY R
TERM
HIGH-Z HIGH-Z ON
1 0 0 TRANSMIT WITH RECEIVE R
IN
DRIVEN DRIVEN OFF
1 0 1 TRANSMIT WITH RECEIVE
AND TERM
R
TERM
DRIVEN DRIVEN ON
1 1 0 TRANSMIT R
IN
DRIVEN HIGH-Z OFF
1 1 1 TRANSMIT WITH TERM R
TERM
DRIVEN HIGH-Z ON
LTC2854 LTC2855
DE
RO
DI
A
(15kV)
TE
V
CC
B
(15kV)
Z
(15kV)
Y
(15kV)
SLEEP/SHUTDOWN
LOGIC AND DELAY
RECEIVER
DRIVER
RE
120Ω
R
TERM
120Ω
R
TERM
DE
RO
DI
A
25kV
TE
B
25kV
SLEEP/SHUTDOWN
LOGIC AND DELAY
RECEIVER
DRIVER
RE
285455 BD
V
CC
GND
125k
R
IN
125k
R
IN
125k
R
IN
125k
R
IN
GND
FUNCTION TABLES
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